Type-writing machine.



C. B. CORCORAN TYPE WRITING MACHINE.

APPLICATION FILED JULY 9. 1913.

1,171,026. Patented Feb. 8,1916.

nnrrnn GUENELITJ'S ECORCON, OF NEW YORK, N. Y., ASSIGNOR T0 UNDERWOOD TYPE- WRITER- {COMPANY, OF NEW YORK, N. Y., A. CORPORATION 015 DELAWARE.

'r n-wnrrrne MACHINE.

Application filed July 9, 1913.

To aZZ whom it may concern:

Be it @own that I, CoRNELros B. Con- CORAN, a citizen of the United States, residing in New York, in the county of New York and State of-New York, have invented certain new and useful Improvements in Type-Writing Machines, of which'the fol lowing is a specification. 1

This invention relates to improvements in.

the front paper-guiding fingers of typewrit the card, when it is desired to write near the edge of the same.

The guide fingers are usually attached to carriers, which are slidable and partly rotatable upon a rail. The carriers are yieldingly splined to the rail, to permit the paper-fingers to be easily lifted from 'the platen. In carrying out the present invention, the carriers may be temporarily locked against turning on said rail. This is preferably' done by means of a bolt device, which is adjustable withthe carrier along the rail but is incapable of turning thereon, and may be manipulated to lock the carrier against rotating, so that the guide finger and roll are positively held against the platen.

A spring is located between the latch and carrier which normally tends to unb olt said carrier. This spring however, is not sufiiciently powerful to overcome the friction between the bolt and the carrier (when the latter is locked); but upon depressing the guide finger, the friction is relieved, and the spring withdraws the bolt or latch. to free the guide finger.

Other features and advantages will hereinafter appear.

In the accompanying drawings, Figure l is a perspective front view of the present improvements applied to the platen and Specification of Letters Patent.

Patented an, snore.

Serial no. 777,983.

platen frame of an Underwood typewriting machine. Fig. 2 shows the cross section of the platen, with the improvements. Fig. 3 1s a part-sectional front elevation showing the paper-guiding finger locked against rising. 4 is a similar view, showing the parts 1n normal positions. Fig. 5 is a perspective view of a locking collar or Flg. 6 1s a cross section showing" mount. the right-hand paper-finger bracket or mount pressed rearwardly and locked, (the paper-finger being of course pressed down toward the platen). At this figure, the yielding spline 11 is shown forced out of the groove in the rod 10. Fig. 7 is a similar view showing the locking mount partly in sect1on. Fig. 8 is a similar view. to Fig. 6, but showing the parts in normal positions, the paper-finger mount being unlocked.

"lhe usual platen 1 is mounted between the platen frame ends'2, which are held together at the rear of the platen by a paper table 3.. The work sheet 4. is fed around said platen with the aid of the usual bottom feed rolls 5, assisted byfront or auxiliary feed rolls 6 on spring-metal guide fingers 7. Each guide finger 7 is held in position at the front of the platen 1 by an arm 8, extendingfrom a carrier 9, which is mounted slida bly and rotatably upon a rail 10, extending along the rear of the platen and connecting the platen frame ends 2. Either carrler 9 may be rocked by lifting the arm 8, to withdraw said guide finger and roll from the platen, and then shifted. The carrier 9 is provided with a long detent roll or spline pin 11, which is forced to a seat in a longitudinal groove 12 in the rail 10, by means of a spring 13, to yieldingly hold the front roll 6 against the platen as shown in Fig. 2.

According to the present invention, the guide finger may be locked against rising by a'locking pin or bolt 14:. This locking pin is mounted in a collar or mount 15, which is splined to the rail 10, with a screw 16, engaging groove 12, so that said collar may be shiftable along said rail, but not rotated. Normally the locking pin-14 is a trifle behind front edge 17 of the carrier 9; but if the arm 8 is forcibly depressed the carrier will be rocked back sufiiclently to allow the the collar and the carrier.

locking pin 14 to be projected in front of said carrier, to lock the latter against rotation.

The collar 15 is loosely connected to the carrier 9 to shift therewith, by means of a finger 18 (Figs. 3, 4), the end of which is bent over to form a hook to hold said collar.

A releasingv spring 19 is placed between When the friction between the carrier and the locking pin is relieved by depressing the arm 8, this spring will withdraw the locking pin.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, the combination of a platen mounted in a platen frame,

a rail supported in parallelism with said platen, a carrier mounted on said rail, a guide finger attached to the carrier, a roll mounted on said guide finger, a shiftable member splined to the rail, and a carrier locking pin on said member lying behind the front edge of the carrier when the feed roll bears normally against the platenl.

2. In a typewriting machine, the combination of a platen mounted in a platen frame,

a rail supported in parallelism with said platen, a carrier slidable and rotatable upon said rail, a guide finger attached to said carrier, a feed roll mounted in said guide finger, locking means for said carrier to prevent said guide finger and feed roll from rising from the surface of the platen, said locking means held frictionally in an operative position, and means acting to render sald locklng means moperatlve upon de pressing the guide finger. p

3. In a typewriting machine, the combination of a platen mounted in a platen frame, a rail supported parallel to said platen, a carrier mounted to slide upon said rail, a groove in said rail, means on said carrier adapted to engage said groove to yieldingly hold the carrier against rotationfa guide finger attached to the carrier, a roll mounted on said guide finger, engaging means on said rail, and-means on said carrier adapted to cooperate with said engaging means, whereby the carrier and the finger held thereby may be held rigidly against rotation.

4. In a typewriting machine, the combina tion of a platen mounted in a platen frame,

a rail supported in said frame parallel with said platen, said rail having a groove therein, a carrier slidable along said rail and having means for yieldably engaging said. groove, a guide finger on said carrier, and

means on the rail engaging said groove for positively locking said carrier against rotation.

5.-In a typewriting machine, the combination of a platen frame, a platen mounted therein, a round rail supported in said frame parallel with the platen, a groove in said rail extending lengthwise thereof, carriers mounted on said rail, spring-held members mounted on said carriers and adapted for engagement with the groove of said rail, paper-holding fingers mounted on the ends of said carriers and adapted to press the paper toward the platen when the springheld member is in engagement with the groove of the rail, and means on said rail engaging said groove for positively locking said carrier against rotation.

6, In a typewriting machine, the combina tion of a platen frame, a platen mounted therein, a grooved rodsecured to said frame parallel with the platen and having its groove on the under side, carriers mounted to slide upon and turn about said rod, said carriers being provided with detent rolls ,spring pressed into the groove and} lying parallel with the" rod, a locking pin rigid with said rod, and means on said carrier with which said pin may engage, said means and pin being so arranged that engagement occurs only when the carrier and the finger are depressed. I a

7, In a typewriting machine, the combination of a platen frame, a platen mounted therein, a rod mounted upon said frame w and extending parallel with the platen, means upon the circumference ofsaid rod for engagement with a yielding locking means, carriers mounted to turn about said rod, paper-engaging fingers on said carriers,

in paper pressing relation to the platen but may turn away from the platen, and means on said rail engaging said groove for positively locking said carrier against rotation 8. In a typewriting machine, in combina tion, a platen frame, a platen therein, a.

rod mounted on said frame parallel to said platen, saidrod having on its circumference a place for engagement with a yielding looking means, a carrier on said rod, a paper engaging 'finger on said carrier, a yielding locking means for engagement with the said place on said rod, a pin mounted on the rod in fixed angular relation thereto but slidable lengthwise thereon, said pin being so located with reference to the carrier as to be a trnile said rail with sprlng means pressing it te 3 ward said platen, and a self-releasin look also mounted on said rail and capable of holding said guide-finger in operative posi tion.

10. In a typewriting machine having a platen and a rail parallel therewith, a carguide-finger and feed-roll in operative pbsirier. with a guide-finger and feed-roll slidtion.

ably and rotatably mounted on said' rail spring means pressing said guide-finger and CORNELIUS COROORANI? 6 feed-roll toward said platen, and a self- Witnesses:

releasing lock also mounted on said rail and F. E. ALEXANDER,

cotiperating with said carrier t o hold said JULIUS DUCKSTINE. 

